This course is part of the curricular line of Mechanical Engineering. Therefore "Machine Elements" comprises along with "Mechanism theory" and "Mechanical Vibrations" and the 2nd course subjects "Mechanics" and "Applied Mechanics" the fundamentals and basis of knowledge of the general behavior of machines. This knowledge is completed by "Machine testing", where the design criteria, safety margins, reliability, design fracture and fatigue are addressed.

Subjects "Assessment of Elastic Solids" and "Elasticity and Strength of Materials" of 3rd course are very close with "Machine elements" too. In these subjects, from the stresses applied to the elements of mechanisms, procedures for obtaining their secondary dimensions (thickness and sections) are explained. Such stresses are obtained in the course for each of the mechanical elements studied.

Moreover some of the manufacturing processes explained in the course of the 4th year of Mechanical Technology are the basis to know how to produce and manufacture specific machine elements.

The knowledge and skills learned in "Machine Elements" have direct and practical application, and form the basis of other subjects related with mechanical character during the same course.

The engineer, who designs machines and studies mechanical problems, must have a great theoretical and practical training. Machine elements are devices that perform a given function, which should be known by the student. The engineer must be able to explain the relationship between the structural topology, geometry, forces and motion in machine elements, all of which constitute the object of the subject "Machine Elements".

During the development of this course it is intended that students acquire skills in solving typical problems in the design, sizing, selection of the machine elements and even the relationship with the most usual manufacturing methods.

In particular the specific competencies are:

• understanding of the function performed by the machine elements in the whole set, as for transformation of movement, in relation to types of movement, gears and transformation of forces and torques.

• To acquire the skills to carry out the kinematic analysis of the mechanical elements from analytical procedures.

• Describing and being able to identify the variables that influence contact problems, friction and wear.

• Defining the main lines of design and study the movement of cams.

• Define the geometry of the main types of gears, and identify their application based on their properties.

• Define transmission chains using gears, defining in detail the use toothed wheels.

• Define, measure and be able to choose a clutch or brake

• Define, measure and be able to choose a flexible transmission, belt type, chain or cable.

• Define, measure and be able to choose a bearing depending on the application where it will be located.

Chapter 1: Introduction

Chapter 2: Tribology

Chapter 3: Gears: Spur and helical

Chapter 4: Gearboxes and gear trains

Chapter 5: Camshafts and shafts

Chapter 6: Brakes and clutches

Chapter 7: Flexible transmissions

Chapter 8: Bearings

Chapter 9: Practical applications: press machine

To lecturing the subject, as it has been progressively implemented in previous courses, lectures along with teaching resources and the development of classroom practices, seminars, laboratory practice (computer and workshop) and personalized tutorials are combined.

Lectures:

The exposure of content and theoretical concepts of each topic is made. For this work, Power-point presentations and video demonstrations are available to the student. Also, the explanation is accompanied by brief illustrative exercises, based on real mechanical systems.

Practices:

In each practical class, problems based on real machines elements are solved in order to fix the concepts presented in the lectures.

Seminars:

Throughout the course a seminar on the design and selection of elements in a complex machine is done. The structure of small groups of seminars will address problem solving and theoretical and practical issues both individually and in groups of students always with the assistance and guidance of the professor teaching the seminar.

Laboratory practice and Workshop

Throughout the course, a computer practice on the design and calculation of cam-follower systems is performed.

In other practice, the mechanical workshop will be visited to watch the fabrication of gears and operation of various gear trains.

Individual and group tutorials:

During the hours of tutoring specified in paragraph 1.5 of this document, the teachers of the subject are available to resolve issues that students, individually or in groups, arise. These questions will be related to the content of the lectures, practical classes, seminars, laboratory practice or preparation of examinations to be performed during the course.

Virtual Teaching Platform:

In the https://egela.ehu.es/ platform available to the students, all the material needed is located. Specifically: this Student Guide, scripts and computer practices workshop and a collection of statements of examination as well as any of the Power-Point presentations. On the other hand, programs developed specifically for computer practices of this subject are available to the student.

• Final Assessment System
• Tools and qualification percentages:
  • Written test to be taken (%): 100

A final exam will be done to check for the student's knowledge.

To give up the call will suffice that the student is not present to the examination in which case the grade would be "NOT PRESENTED".

A final exam will be done to check for the student's knowledge.

To give up the call will suffice that the student is not present to the examination in which case the grade would be "NOT PRESENTED".

N/A

Basic bibliography

Elementos de Máquinas (ISBN)

Problemas resueltos de elementos de máquina

In-depth bibliography

N/A

Journals

N/A

Web addresses

www.ingenierosbilbao.com

www.thinkmotion.eu

www.dmg-lib.org

http://kmoddl.library.cornell.edu

www.technologystudent.com

www.howstuffworks.com

www.biblioteka.ehu.es